private async Task GetIncome()
        {
            var meetings = MeetingDataStore.GetMeetingsAsync().Result.Where(m => m.TimeStart.Date >= IncomeInfo.DateStart.Date && m.TimeStart.Date <= IncomeInfo.DateEnd.Date);

            IncomeInfo.TotalIncome            = meetings.Select(m => m.Income).Sum(m => m.Value);
            IncomeInfo.CountMeetingWithIncome = meetings.Where(m => m.Income != null).Count();
        }
        public async void MeetingOnActualDayUpdate()
        {
            MeetingOnActualDay.Clear();
            var meetings = await MeetingDataStore.GetMeetingsAsync(true);

            meetings = meetings.Where(m => m.TimeStart.Date == ActualDay.Date);
            foreach (var item in meetings)
            {
                MeetingOnActualDay.Add(item);
            }
        }